Pulling PVC

Discussion in 'Irrigation' started by bobw, Oct 27, 2007.

  1. bobw

    bobw LawnSite Senior Member
    Posts: 807

    Just a couple of questions for you guys that pull PVC into the ground...

    1) How are you connecting the pulled laterals into the valve? Using a slip fix to bridge the gap and allow for twist when glueing?

    2) How are you connecting heads to the laterals? Saddles?

    3) What is the general order that you are progressing the project?

    i.e. Trench mainline, pull lateral, install valve, install heads?


    I'm just working on a commercial bid and given the site, I'm thinking that pulling PVC might be a much better idea than trenching everywhere. We always pull poly on residentials, and usually use poly for laterals on commercial, but this projects specs call for PVC laterals, so I'm just trying to find the most cost efficient method.
     
  2. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    By pulling, I assume you mean trenching! Can you truly "pull" PVC?
     
  3. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    Didnt read your whole post, I see now... You can pull PVC? At any rate, heres what I got, dont know if this would be different pulling, we dont do that here in the desert.


    Glue it straight in to the adapter or joint.


    T's or elbows with swing joints, in most cases.

    Trench, rough lay with fittings, cut and glue, valves/ manifold, heads, backfill.



    Am I off my rocker?
     
  4. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,990

    Are you sure pulling PVC is a great idea in Alberta? I figure you'd have a good possibility of 'frost and heave' action in the cold weather, which could do major damage to cold PVC. A lot of PVC spec jobs in poly territory involve backfilling trenches with trucked-in sand.
     
  5. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,062

    ::::backs out of thread:::::
     
  6. BrandonV

    BrandonV LawnSite Platinum Member
    Posts: 4,253

    trench trench trench, you could rent a ground saw if the ground is all hard
     
  7. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,062

    With ROTAR, you have a human ground saw!:laugh:
     
  8. bobw

    bobw LawnSite Senior Member
    Posts: 807

    Am I sure that pulling PVC is a great idea around here? Good question. I have seen it done around here (in fact, within 2 blocks of this particular site). The mainline will have to be trenched, backfill requirements do not call for sand, just clean fill less than 3/4" in size. Unfortunately, the landscape architect that spec'd the irrigation isn't from around here and spec'd PVC laterals. I usually use Poly laterals to avoid any heaving concerns.

    I could trench all the laterals in, I'm just looking to be more efficient and do less ground damage; all told there will be 9000 feet of lateral line to worry about, so any efficiencies found do pay off on this scale.
     
  9. BrandonV

    BrandonV LawnSite Platinum Member
    Posts: 4,253

    sch 40 or pr 200/160
     
  10. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    We would pull up to 2 inch no problem. You just need a strong plow, like a 410sx.

    Once the pipe is pulled, you can use a rubbet mallet on one end of the pull to move it in the ground, so you just line it up with the valve, and apply glue and have an assistant hit the pipe a few times on the other end. On short pulls, you can pull and twist the entire length by hand in the hole.

    Same goes for heads, just a regular slip x slip x thread tee, its easy to slide the pipe in the hole.
     

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